1783980234 has 64 divisors (see below), whose sum is σ = 4248679680. Its totient is φ = 553417920.

The previous prime is 1783980199. The next prime is 1783980239. The reversal of 1783980234 is 4320893871.

It is a self number, because there is not a number n which added to its sum of digits gives 1783980234.

It is not an unprimeable number, because it can be changed into a prime (1783980239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26544 + ... + 65364.

It is an arithmetic number, because the mean of its divisors is an integer number (66385620).

Almost surely, 2^1783980234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1783980234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2124339840).

1783980234 is an abundant number, since it is smaller than the sum of its proper divisors (2464699446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1783980234 is a wasteful number, since it uses less digits than its factorization.

1783980234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38892 (or 38886 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1783980234 is about 42237.1901764310. The cubic root of 1783980234 is about 1212.8209196795.

The spelling of 1783980234 in words is "one billion, seven hundred eighty-three million, nine hundred eighty thousand, two hundred thirty-four".